Review on 🔌 DSD TECH SH-U09C5 USB to TTL UART Converter Cable with FTDI Chip: 5V 3.3V 2.5V 1.8V TTL Support by Jay Chenier

In my humble opinion this product offers the best value for money and works as advertised. There are many similar serial adapters, but this one can switch voltages. So if your project requires 1.8V, 3.3V and 5V interface, you can switch between different voltages with a small jumper. This is very convenient and you don't need to buy a separate adapter to work with different voltages.